His effort was rewarded.

Meaning: This sentence tells us that the boy's effort was recognized and he received something in return for it.

Choice of Words: His is a possessive adjective that refers to the boy from the previous sentences. Effort is a noun that refers to the hard work and energy that the boy put in. Was rewarded is a passive voice construction that means that the boy received something in return for his effort.

Alternative Expressions

Related Expressions